SEXUAL ORGANS 



77 



F'S- 377- Development of the archegonium in Bot>ychiuin virgini- 

 aniim (after Campbell). A-D, longitudinal sections ( x 240) ; E, ripe 

 archegonium, showing ventral canal-cell, v (X125) (after Jeffrey) ; 

 F, recently fertilised archegonium, showing spermatozoids within 

 venter ( x 240). 



Fig- 378. Prothalli and sexual organs oi Helinintliostachys zeylanka (after Lang), a, 0, pro- 

 thalli seen from without; f, d, in section, with mycorhizic regions shaded ; e, antheridium 

 in longitudinal section; f, g, archegonia. [a, h, c; d, x-j; e, /, x 200). a« = antheridium, 

 rtr= archegonium, e or ^w = embryo. 



